Home » Electroabsorption modulator based on Wannier-Stark localization with 20 GHz/V efficiency

TITLE

Electroabsorption modulator based on Wannier-Stark localization with 20 GHz/V efficiency

AUTHOR(S)

Devaux, Fabrice; Bigan, Erwan

PUB. DATE

December 1992

SOURCE

Applied Physics Letters;12/7/1992, Vol. 61 Issue 23, p2773

SOURCE TYPE

Academic Journal

DOC. TYPE

Article

ABSTRACT

Examines the modulator electroabsorption based on the Wannier-Stark localization in an indium gallium arsenide/indium aluminum arsenide superlattice. Measurement of anisotropic absorption; Acquisition of modulator efficiency; Comparison between the Wannier-Stark localization and quantum stark effect.

A Stark shift for a GaAs/AlGaAs multiple quantum well structure containing a nipi delta-doping superlattice is observed. Photocurrent measurements revealed a Stark shift that varied with increasing applied electric field, from being equivalent to that of an undoped structure to 30% below. Even...

Demonstrates a waveguide intensity modulator for visible wavelengths based on the quantum-confined Stark effect. Composition of active waveguide; Estimation of voltages corresponding to electric fields in quantum well regions; Determination of modulation depth.

Examines the effect of the growth phase of cadmium sulfide-zinc selenide superlattices on the intrinsic Stark effect. Increase of the effective piezoelectric coefficient; Comparison of exciton peak shifts per decade change with other structures; Attribution of small peak shifts to space charge...

Compares the responsively and transmission performance of multiple-quantum-well (QW) optical modulators having single or double steps in the quantum well with the square-QW control sample. Means to change the geometry of the QW; Involvement of QW in the increase of quantum confined Stark...

An optical electroabsorption waveguide modulator is described based on the quantum-confined Stark effect in an InGaAs/InP multiple quantum well waveguide. The optical modulator has a high on/off ratio (47:1) with very low insertion loss (2.9 dB) and a 3-dB modulation bandwidth of 3.0 GHz at 0.1...